17/8-0.125÷3/16,3/5×0.2÷5/6

问题描述:

17/8-0.125÷3/16,3/5×0.2÷5/6
X÷7/15=45/14

17/8-0.125÷3/16,
=17/8-0.125×16/3
=17/8-2/3
=51/24-16/24
=35/24
3/5×0.2÷5/6
=3/5×0.2×6/5
=3.6/25
=0.144X÷7/15=45/14X÷7/15=45/14X=45/14×7/15X=3/2